[openib-general] [PATCH] mthca updates (2.6.8 dependent)

[Grant Grundler]

On Thu, Sep 02, 2004 at 01:06:43AM +0300, Dror Goldenberg wrote:
> I was talking about regular interrupts in PCI express.

yes - sorry. I had to re-read that paragraph.

> For PCI express
> MSI/MSI-X are plain DMA writes. However, good old interrupts in PCI
> express don't go on external wire. They just go on the same bus like 
> the data, for that they use special PCI express messages. And, they
> maintain ordering like other any other DMA writes. So, although the
> same semantics of "old interrupts" is preserved, the behavior is a bit
> different in PCI express.

Yes - I'm slightly aware of it but haven't worked with PCI express
directly yet (ie collected or looked at PCI-express bus traces.).

thanks for the correction,
grant